Set up Codex on this VM by following the exe.dev recipe at https://exe-staging.dev/deploy/codex.md from top to bottom.

The recipe's example VM name is my-codex. This VM's name is the output of `hostname`: use it wherever the recipe writes my-codex. Skip the step that creates the VM; you are on it.

You are done when all of these are true. Check each one yourself:
- Codex connected to a model, with no API key or sign-in
- A Git repository at `~/project` on persistent disk
- A `codex` tmux session that survives disconnects

Use the preinstalled Codex. Run the VM-side setup in "Start coding".
Create tmux detached (`tmux new -d -s codex -c ~/project`) rather than
attaching. Reuse the session if it already exists. Do not launch
interactive Codex. If `exeuntu configure codex` reports `existing user
config`, leave `~/.codex/config.toml` alone and do not sign in or out of
ChatGPT; ask the owner if this prevents setup. Verify from ~/project with
`codex exec -m gpt-6-luna "Reply with exactly: OK" </dev/null` and check
`tmux has-session -t codex`. Skip the later optional instructions and FAQ.
Finish with the SSH command from "Take a break", using this VM's name,
and tell the owner to run `codex` inside it.

Finish with the URLs I should open.